Kevin Plank

Plank grew up playing youth football with the Maplewood Sports Association; a Maplewood team has appeared in Under Armour commercials. He left the prestigious Georgetown Preparatory School, a Catholic school, due to poor academic performance and behavioral issues, then went on to graduate from another Catholic school, St. John's College High School, in 1990. Afterward, he played football at Fork Union Military Academy for a year, trying to get the attention of NCAA Division I schools. He was not recruited by the top-tier collegiate football programs.

However, he went to University of Maryland, College Park and walked onto the team there. He graduated in 1996 with a bachelor's degree in business administration.

Plank initially ran the business from his grandmother's townhouse in Georgetown. Under Armour's first shirt was the #0037, which Plank sold from his car. He also asked his former teammates to try on the shirts, claiming that his alternative to a cotton T-shirt would enhance their performance on the field. As his friends moved on to play professionally, he would send them T-shirts, requesting that they pass them out to other players in their locker rooms. His first big team sale was to Georgia Tech. In 1996, Plank finished his first year selling shirts with $17,000 in sales.

A turning point for him came late in 1999, when Plank used nearly all of Under Armour's money, and employees agreed to go without pay for a few weeks, so the company could take out a $25,000 advertisement in ESPN The Magazine. The ad resulted in $1 million in direct sales for the following year, and athletes and teams began buying the product. Plank's company reached $1 billion annual revenue for the first time in 2010, and Plank became a billionaire in 2011, when his net worth was estimated at $1.05 billion.

Plank married Desiree Guerzon, in 2003. They have two children, and live in Lutherville, Maryland. As of February 2018, Forbes estimated his net worth at US$1.8 billion.

Plank bought the 630-acre historic Sagamore Farm in Baltimore County, Maryland, in 2007. The property was once owned by Alfred Gwynne Vanderbilt. The farm was the home to stallion Native Dancer, who went 21 for 22 during his racing career from 1952 to 1954. Plank has said he seeks to restore the farm and rejuvenate Maryland's horse racing tradition by raising a Triple Crown winning horse. On November 5, 2010, Sagamore Farms' Shared Account won the $2 million Breeders' Cup Filly & Mare Turf (GI). There are about 100 horses on Sagamore farm, with about 40 actively training as of July 2017.

Beginning in 2013, Plank's real estate firm, Sagamore Development, was leading a $5.5-billion mixed-use development project in Baltimore's Port Covington area. The company had acquired approximately 235 acres in the area and planned to build a mix of offices, residential areas, retail space, parks, boat launches and more.

Plank also founded the whiskey distillery Sagamore Spirit in 2013. He was initially approached about creating a vineyard, but being a whiskey enthusiast he asked his business partner to research whiskey. The limestone aquifer on Plank's farm produced water fit to distill whiskey, so Plank and business partner Bill McDermond founded Sagamore Spirit to restore Maryland's whiskey distilling tradition. Its first bottles were sold at stores in 2016.

Between 2014 and 2016, Under Armour spent close to $1 billion to acquire makers of activity- and diet-tracking mobile apps. Many long-term employees questioned Plank's strategy and whether the company would produce a return on their investment. Plank spent hours in one-on-one conversations to try and persuade those employees. "It was important," Plank said, "that this not just be my decision. The strategy was a success, earning the company the world's largest digital health-and-fitness community, with 150 million users.

In November 2014, Plank pledged $25 million to the University of Maryland to be used for the proposed athletics and academic complex. The project has converted Cole Field House, the school's former basketball arena, into the football facility, a sports medicine center and student entrepreneurship lab. In 2015, Plank pledged $16 million to St. John's College High School in Washington, DC, to fund athletics, academics and entrepreneurship initiatives. Plank donated $1 million to the Archdiocese of Baltimore in 2016 to help 100 more children go to Catholic school.

Plank donated $1 million through The Cupid Foundation to the Baltimore-based CollegeBound in 2016. The next year, his charitable arm funded 40 summer jobs for Cherry Hill, Baltimore, public school students in the maritime transport industry.

According to the Federal Election Commission, Plank has donated to both major U.S. political parties and to individuals of both parties. On CNBC's Halftime Report in February 2017, Plank commented on Donald Trump's pro-business philosophy, saying the president was a "real asset" to the business community. Plank's comments drew criticism on social media. As some customers vowed to boycott the brand, three major endorsers—Stephen Curry, ballerina Misty Copeland, and actor Dwayne "The Rock" Johnson—went on Twitter to express their opposition. Johnson called Plank's words "divisive". In the days following the remarks, Plank bought a full-page advertisement in The Baltimore Sun to clarify his comments. In the ad, Plank said Under Armour stood for job creation, but publicly opposed the president's proposed travel ban.

Plank announced his retirement as CEO, in October 2019, and was succeeded, on January 1, 2020 by Under Armour COO Patrik Frisk.